.NET library written in C# with a full implementation of a POP3 client. Easy to use but yet powerful. Includes a robust MIME parser backed by several hundred test cases.

The easiest way to install OpenPop.NET is via NuGet.
In Visual Studio's Package Manager Console, simply enter the following command:
Install-Package OpenPop.NET

Our homepage (http://hpop.sourceforge.net/) includes examples, documentation and a general introduction for email.

For more information, visit our project homepage.

Code is hosted on GitHub (https://github.com/foens/hpop).


  • POP3
  • Robust MIME decoding
  • SSL and plain TCP supported

Project Activity

See All Activity >




Public Domain

Follow OpenPop.NET

OpenPop.NET Web Site

Other Useful Business Software

WhatsUp® Gold - Ranked #1 For Network Monitoring WhatsUp® Gold - Ranked #1 For Network Monitoring Icon
WhatsUp® Gold - Ranked #1 For Network Monitoring Icon

Automatically discover anything connected to your network with the industry's best flexible licensing. Free trial of our award-winning software

The industry’s best network monitoring software, WhatsUp® Gold includes: Hybrid Cloud Monitoring, Real-Time Performance Monitoring, Automatic and Manual Failover and Extended Visibility to Distributed Networks. Trusted by thousands of organizations worldwide. WhatsUp® Gold - More Visibility. Better Performance. Less Cost. Try it free for 30 days.
How many devices do you monitor on your company's network?
One last question before you visit our site:

When do you plan to purchase a network performance monitoring solution?

Rate This Project

Login To Rate This Project

User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 3 / 5

User Reviews

  • I sincerly consider this app the best app I at all times tried! => consider having a look at this webiste for Free Gift Cards : www.fregifts.com

  • Stunningly simple, just works perfectly to parse out raw emails dropt into an s3 bucket. Totally demystifies MIME email messages.

  • Failing to load email: System.FormatException: The specified media type is invalid. at System.Net.Mime.ContentType.set_MediaType(String value) at OpenPop.Mime.Header.HeaderFieldParser.ParseContentType(String headerValue) at OpenPop.Mime.Header.MessageHeader.ParseHeader(String headerName, String headerValue) at OpenPop.Mime.Header.MessageHeader.ParseHeaders(NameValueCollection headers) at OpenPop.Mime.Header.MessageHeader..ctor(NameValueCollection headers) at OpenPop.Mime.Header.HeaderExtractor.ExtractHeadersAndBody(Byte[] fullRawMessage, MessageHeader& headers, Byte[]& body) at OpenPop.Mime.MessagePart.ParseMultiPartBody(Byte[] rawBody) at OpenPop.Mime.MessagePart.ParseBody(Byte[] rawBody) at OpenPop.Mime.MessagePart..ctor(Byte[] rawBody, MessageHeader headers) at OpenPop.Mime.Message..ctor(Byte[] rawMessageContent, Boolean parseBody) at OpenPop.Pop3.Pop3Client.GetMessage(Int32 messageNumber)

  • I have a error, how I solve this? ERROR:The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters. what's meaning?

  • Not able to connect to mail server.Most of the times it gives error like :No connection could be made because the target machine actively refused it OR An invalid argument was supplied Please help!!!

Read more reviews >

Additional Project Details

Intended Audience

Advanced End Users, Developers

Programming Language